* {
    margin: 0px;
    padding: 0px;
    list-style: none;
    text-decoration: none;
}

.nav-1 {
    width: 100%;
    height: 40px;
    background-color: #222;
    margin: 50px 0px;
}

.ul-1 {
    width: 1000px;
    height: 40px;
    margin: 0px auto;
}

.ul-1 li {
    float: left;
}

.ul-1 li a {
    color: #eee;
    padding: 0px 30px;
    line-height: 40px;
    display: block;

}

.ul-1 li a:hover {
    background-color: #444;
    color: #fff;

}

/*************************************************************************************************************/

.nav-2 {
    width: 100%;
    height: 40px;
    background-color: #222222;
    overflow: hidden;
}

.nav-2 .ul-2 {
    width: 1000px;
    height: 40px;
    margin: 0px auto;
}

.ul-2 li {
    float: left;
}

.ul-2 a {
    display: block;
    transition: 0.3s;
    -moz-transition-duration: 0.3s;
}

.ul-2 span, .ul-2 i {
    color: #eeeeee;
    line-height: 40px;
    text-align: center;
    display: block;
    padding: 0px 30px;
}

.ul-2 i {
    font-style: normal;
    background-color: #444444;
}

.ul-2 a:hover {
    margin-top: -40px;
}

/*----------------------------------------------------------------******************---------*/

.nav-3 {
    width: 100%;
    height: 40px;
    background-color: #222222;
    margin: 50px 0px;
}

.ul-3 {
    width: 1000px;
    height: 40px;
    margin: 0 auto;


}

.ul-3 li {
    float: left;
    position: relative;

}

.ul-3 li > a {
    color: #aaa;
    padding: 0px 30px;
    line-height: 40px;
    display: block;
    font-size: 16px;
}

.ul-3 li > a:hover, .ul-3 li .down a:hover {
    color: #ffffff;
    background-color: #444444;
}

/*.ul-3 li:hover .down{*/
/*display: block;*/
/*}*/

.ul-3 .down {
    background-color: #222222;
    position: absolute;
    top: 40px;
    left: 0;
    display: none;
}

.ul-3 li .down a {

    color: #aaa;
    display: block;
    font-size: 13px;
    padding: 0px 30px;
    margin: 7px 0;
    cursor: pointer;

}






